Question

in 2 sticle si in 3 bidoane intra in toatal 19 litri de apa.ce capacitate are o sticla si un bidon daca intr un bidon si in 5 sticle intra 15 litri de apa​

Answer 1

2s + 3b = 19litri

5s + 1b = 15litri

Aducem la acelasi numar de sticle:

2s + 3b = 19litri | · 5

5s + 1b = 15litri | · 2

____________________

10s + 15b = 95litri

10s + 2b = 30 litri

____________________

13b = 65litri

b = 5

2s + 15 = 19

2s = 4litri

s = 2litri